London is in the running to host the Gay Games in 2018, having been shortlisted alongside Paris and Limerick.
Potential venues for the games include facilities in the Queen Elizabeth Olympic Park, home to London 2012 - the velodrome, aquatics centre and the Olympic stadium.
Mayor of London Boris Johnson said: "This is fantastic news and a testimony to the hard work of the London Gay Games bid team.
"London could host a world-beating event in 2018, underlining our city's reputation as a tolerant place to live and visit. I wish London's organising team every success as they progress to this next crucial stage of the selection process."
The London 2018 Committee submitted their bid in February and has attracted support from Mr Johnson, Deputy Prime Minister Nick Clegg, House of Commons Speaker John Bercow and sports minister Hugh Robertson.
A team of inspectors from the Federation of Gay Games (FGG) visited London in July as part of the decision-making process. The winning city is set to be announced by the end of the year.
The sports and cultural festival, which started in San Francisco in 1982 and is held every four years, is open to people of any sexual orientation.
Alex Davis, who is leading London's bid, said: "We are thrilled that London has been shortlisted to host the Gay Games in 2018.
"This is an amazing opportunity to showcase London, and our vibrant LGBT community and we look forward to showing all that London has to offer to the FGG site inspectors in July."
Most participants in the games are members of gay sporting clubs in their home cities, but competitors do not need to demonstrate any particular sexual orientation.
Costs to stage the games will be recouped through ticket sales, sponsorship and registration fees for athletes.
London & Partners have added value to the bid by providing Mayoral endorsement, marketing support and commitment through legal/financial contractual responsibility and use of city assets.
More information: http://london2018.info/
London & Partners Major Events team:
Sarah Neil – Project Manager
Iain Edmondson – Head of Major Events